I Phone 4

IPhone 4 is a smartphone haptic designed and developed by Apple and the Foxconn manufactured  and is the fourth generation of iPhone , the focus is on marketed as a device capable of doing calls and video playback media such as books, magazines, digital , video, music , games and access to e-mail . 

The machine was announced in Apple's global conference for developers in 2010 in the hall of the Moscone Center in San Francisco , and put on the market on June 24, 2010 in the United States , France , Germany , the United Kingdom and Japan .

Works iPhone 4 running iOS (Apple) is the same system used in previous devices iPhone and iPad and iPod Touch , the screen is controlled by multi- touch finger mainly. The first thing to note from the difference in the iPhone 4 from its predecessors is the renovated structure , which includes a framework steely -resistant steel without insulator where the role of communication technologies in antenna device , located internal components of the device between two layers of glass Alolominossellkat chemically enhanced . There are two processor Apple and AT 4 random memory capacity of 512 MB of type y . The device has a screen measuring 3.5 inches ( 89 mm) of the type LCD backlit LG LED background accurately 960x640, possible access to this technology , thanks to precision shopping as the "Retina Display".

GENERAL	2G Network	GSM 850 / 900 / 1800 / 1900
	3G Network	HSDPA 850 / 900 / 1900 / 2100
	SIM	Micro-SIM
	Announced	2010, June
	Status	Available. Released 2010, June

BODY	Dimensions	115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in)
	Weight	137 g (4.83 oz)

DISPLAY	Type	LED-backlit IPS LCD, capacitive touchscreen, 16M colors
	Size	640 x 960 pixels, 3.5 inches (~330 ppi pixel density)
	Multitouch	Yes
	Protection	Corning Gorilla Glass, oleophobic coating

SOUND	Alert types	Vibration, proprietary ringtones
	Loudspeaker	Yes
	3.5mm jack	Yes

MEMORY	Card slot	No
	Internal	8/16/32 GB storage, 512 MB RAM

DATA	GPRS	Class 10 (4+1/3+2 slots), 32 - 48 kbps
	EDGE	Class 10, 236.8 kbps
	Speed	HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps
	WLAN	Wi-Fi 802.11 b/g/n, Wi-Fi hotspot
	Bluetooth	Yes, v2.1 with A2DP
	USB	Yes, v2.0

CAMERA	Primary	5 MP, 2592 x 1936 pixels, autofocus, LED flash, check quality
	Features	1/3.2'' sensor size, 1.75 µm pixel size, geo-tagging, touch focus, HDR photo
	Video	Yes, 720p@30fps, check quality
	Secondary	Yes, VGA, 480p@30fps, videocalling over Wi-Fi only

FEATURES	OS	iOS 4, upgradable to iOS 7.1
	Chipset	Apple A4
	CPU	1 GHz Cortex-A8
	GPU	PowerVR SGX535
	Sensors	Accelerometer, gyro, proximity, compass
	Messaging	iMessage, SMS (threaded view), MMS, Email, Push Email
	Browser	HTML (Safari)
	Radio	No
	GPS	Yes, with A-GPS support
	Java	No
	Colors	Black, White
		- Scratch-resistant glass back panel - Active noise cancellation with dedicated mic - iCloud cloud service - Twitter and Facebook integration - Maps - Audio/video player/editor - Image viewer/editor - Voice memo - TV-out - Document viewer - Predictive text input

BATTERY		Non-removable Li-Po 1420 mAh battery
	Stand-by	Up to 300 h (2G) / Up to 300 h (3G)
	Talk time	Up to 14 h (2G) / Up to 7 h (3G)
	Music play	Up to 40 h

MISC	SAR US	1.17 W/kg (head)     1.11 W/kg (body)
	SAR EU	0.93 W/kg (head)     0.74 W/kg (body)
	Price group

TESTS	Display	Contrast ratio: 1242:1 (nominal) / 2.016:1 (sunlight)
	Loudspeaker	Voice 65dB / Noise 60dB / Ring 66dB
	Audio quality	Noise -90.1dB / Crosstalk -89.6dB
	Camera	Photo / Video